Most on the oldgmctruck site are interested only in 6 banger gmc motors.

Pontiac Safari and performance years offer the best tech info.

http://forums.performanceyears.com/forums/forumdisplay.php?f=426

Butler performance knows a lot about the early Poncho motors in GMC trucks.
http://www.jbp-pontiac.com/

Wallace Racing also has some useful pontiac information.
http://www.wallaceracing.com/index.html

A 1960 pontiac engine is easy to discearn from the 1955-1959 gmc and pontiac v8s. It is not reversed cooled, so there will not be any tubes coming out of the timing cover/ water pump housing going into the heads.

John
P.S. The oldgmctruck site will not give you any "bad" or "mis" information. If you get an answer on that site, you can rest assured it is the correct answer. I used all the above linked sites Randy has provided when I built my pontiac v8 for my 59.

Last edited by bigbadswingdaddy; 01/04/2012 5:20 AM. Reason: added links